Vitamin D works with calcium to keep bones strong. Low levels of vitamin D can cause rickets in children and osteomalacia in adults, conditions where the bones get soft and thin. It can also raise the risk of osteoporosis. More recently, studies have linked low levels of vitamin D with:

Weakened immune function

Sleep problems

Allergies

Obesity

Editorial Note

The information presented here covers some of the nutrients that may be affected when you take certain medications. If you have the signs and symptoms listed, it does not always mean you have low levels of these nutrients. Many things affect the level of nutrients, including your:

Medical history

Diet

Lifestyle

As well as how long you have been taking the medication. Please talk with your health care provider. They can best address your health care needs to determine whether you are at risk for low levels of any nutrients.

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